EP2221193B1 - Bicycle rear wheel hub component - Google Patents

Bicycle rear wheel hub component Download PDF

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Publication number
EP2221193B1
EP2221193B1 EP10001867A EP10001867A EP2221193B1 EP 2221193 B1 EP2221193 B1 EP 2221193B1 EP 10001867 A EP10001867 A EP 10001867A EP 10001867 A EP10001867 A EP 10001867A EP 2221193 B1 EP2221193 B1 EP 2221193B1
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EP
European Patent Office
Prior art keywords
axle
bicycle rear
area
hub shell
component
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EP10001867A
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German (de)
French (fr)
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EP2221193A1 (en
Inventor
Erhard Wissler
Thomas Leschik
Daniel Daum
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CARBOFIBRETEC GmbH
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CARBOFIBRETEC GmbH
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Publication of EP2221193A1 publication Critical patent/EP2221193A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
    • B60B27/047—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets comprising a freewheel mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B60B27/023—Hubs adapted to be rotatably arranged on axle specially adapted for bicycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B5/00—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material
    • B60B5/02—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material made of synthetic material

Definitions

  • the invention relates to a recognisedhinterradnabenbaunosti with a hollow cylindrical axis, with two attachable to each end portion of the axis Aus fallendenussi Swissen with an axis partially surrounding hollow cylindrical rotor and a hollow, surrounding the axis of the hub body, wherein the rotor and the hub body arranged on the axis Rolling bearings are rotatably mounted and wherein the axis in the region of the end portions axially outer side of an outer diameter jump region of the axis has a smaller outer diameter than in a central region.
  • Hubs in particular those for bicycles, are known from the prior art. So revealed the WO 00/34056 a bicycle rear hub assembly with a hollow cylindrical axle, are attached to the adapter rings on both sides. These adapter rings press two inner rings of rolling bearings in contact with the adapter rings on beads of the hollow axle.
  • Several rolling bearings are used which, on the one hand, support a hub body rotatably to the axle and, on the other hand, support a rotor rotatably relative to the axle.
  • a freewheel mechanism is arranged between the hub body and the rotor, which are both arranged surrounding the axis. This freewheel mechanism allows the rotor to move in a rotational direction relative to the hub body and prevents opposite rotation relative to the hub body of the rotor.
  • This object is achieved according to the invention in a generic approachinghinterradnabenbau devise that a perpendicular to the axis of rotation cross-sectional surface of the axis along the entire axis of rotation varies by a maximum of 25%, with the exception of the outer diameter jump area adjacent to the axially outer side roller bearings.
  • the cross-sectional area of the axis is understood to be the sectional area of the hollow cylindrical jacket of the axis, perpendicular to the axis of symmetry of the axis receiving the rolling bearing. In this way, too high voltages are avoided and it is ensured a uniform force curve within the axis. Even in the area of the pressed-in roller bearings no voltage jumps take place.
  • cross-sectional area remains constant, it is possible to choose a particularly large diameter in a central region of the axis, in order to further increase the rigidity, without having to accept an additional weight.
  • the axis has a constant wall thickness.
  • axle has end sections at both ends, the outer diameter of which is dimensioned to be smaller by 1.5 to 2.5 times the wall thickness than the outer diameter of the axle in a middle, end-portion-distant region.
  • the voltage and force curve inside the axle is particularly good in this way.
  • the bicycle rear hub assembly can then be particularly well matched to the expected load when the hub body is made of several parts.
  • the hub body at least in an adjacent to the rolling bearings force introduction region has at least one inner hub body, which is surrounded on its outer side by a separate outer hub body, then with minimal dead weight of the hub body of the force curve efficiently from the hub body through the bearings to the axis and from this to the rear of the bicycle frame.
  • a lightweight bicycle rear hub assembly can be configured to be particularly stable when the inner hub body extends continuously from a first force introduction region, adjacent to a first rolling bearing, to a second force introduction region, adjacent to a second rolling bearing.
  • the outer hub body is made of fiber composite material, such as carbon fiber, aramid fiber or glass fiber composite material.
  • the weight of the hub body can be further reduced if the inner hub body is formed in two parts, such that it is designed to be interrupted between the first force introduction region and the second force introduction region.
  • axle and / or the inner hub body are made of light metal alloys, such as aluminum alloys or magnesium alloys.
  • a particularly lightweight bicycle rear hub assembly can be achieved if the axle is made of fiber composite such as carbon fiber, aramid fiber or fiberglass composite.
  • the rotationally symmetric structure of the axle can be made voltage-compatible relatively easily with known means.
  • the axis consists of circular cylindrical sections. Also elliptical cross-sectional areas, prismatic bases or bases that change along the axis of rotation are possible. The freedom of design is increased.
  • the axis in the region of the rolling bearing on its outer side has metallic surfaces.
  • the rotor has on its inner side a shoulder which prevents an outer ring of a bearing arranged on the outside of the rolling bearing, adjacent thereto, on a movement in the direction of the center of the axis. In this way, the static certainty of the entire system is ensured and prevented unintentional displacement of the rolling bearing along the axis.
  • a rotationally symmetrical intermediate piece is arranged between the second roller bearing, which is arranged in the larger outer diameter portion of the axis, and in the second force introduction region.
  • the assembly in particular the pre-assembly of the hub body with the corresponding rolling bearing, is facilitated.
  • weight saving potential can be raised. This becomes particularly efficient when the intermediate piece is made of a light metal alloy, such as aluminum alloy. an aluminum alloy or a magnesium alloy.
  • Fig. 1 shows a bicycle rear hub assembly 1 in a schematic, sectional view. The representation is of a perspective nature.
  • a hollow cylindrical axle 2 is arranged inside the bicycle rear hub assembly 1.
  • the axis 2 has on its two distal ends on end portions 3, which have a smaller outer diameter than the axis in a central region 4.
  • the axis 2 has axially outer side of an outer diameter jump region so a smaller outer diameter than achsinnen paragraph thereof.
  • the outer diameter jump range has only one seen in the direction of the longitudinal axis of the axis 2 extension, which corresponds to the thickness of the wall thickness of the axis 2 in this area.
  • the dropout counterparts 6 have an inside diameter that, when considering a clearance fit, is substantially the outside diameter the end sections 3 corresponds. But the inner diameter of the dropout counterpart 6 can also be smaller to achieve not only a positive connection between the end portions 3 and the Aus fallendenismus Anlagenne 6 during assembly, but also a frictional connection.
  • the bicycle rear hub assembly 1 has an axis of rotation 7 which is simultaneously the axis of symmetry and rotation with respect to the axle 2, the dropout counterparts 6 and the roller bearings 8 mounted on the surface of the axle 2.
  • the rolling bearings 8 are designed as deep groove ball bearings.
  • a rotor 9 Concentric with the axis of rotation 7 and outside the axis 2, surrounding this, a rotor 9 is arranged.
  • the rotor 9 is arranged on two of the four rolling bearings 8 in the illustrated embodiment.
  • Other rolling bearings such as barrel, needle and / or roller bearings are usable.
  • the two further rolling bearings 8 support a hub body 10 rotatably relative to the axis 2.
  • the hub body 10 has an inner hub body 11 and an outer hub body 12.
  • the inner hub body 11 is arranged within the outer hub body 12 and connected with suitable material, positive or non-positive means in the outer hub body 12.
  • the inner hub body 11 provides an outer first rolling bearing 13 a receiving seat.
  • an intermediate piece 15 is arranged between a second roller bearing 14 and the inner hub body 11.
  • the inner hub body 11 extends at least between the first rolling bearing near area and the second rolling bearing near area along the outer hub body 12.
  • the trained as a hollow shaft axis 2 is formed in the illustrated embodiment of light metal and has in the region of the end portions 3 dropout counterparts 6, wherein the cross-sectional area of the axis 2 along the rotation axis 7 remains constant.
  • the central region 4 of the axis thus has a larger diameter for increasing the rigidity.
  • the wall thickness of the axis 2 remains constant.
  • the flexural rigidity remains high.
  • the rotor 9 is made of light metal, as well as the inner hub body 11 and the Aus fallendenopter Anlagen 6, wherein the outer hub body 12, however, is made of fiber composite material, in particular plastic-containing material.
  • the dropout counterparts 6 have concentric extensions which abut on the one side of the axis 2, coarse dirt repellent on the inside of the inner hub body 11 and on the other side of the axis 2 on the inside of the rotor 9, also coarse dirt repellent.
  • coarse dirt repellent on the inside of the inner hub body 11 and on the other side of the axis 2 on the inside of the rotor 9 also coarse dirt repellent.
  • a freewheel device 17 is arranged in the area between the hub body 10 and the rotor 9. This is also referred to as a freewheel mechanism.
  • the axis 2 has the same wall thickness d throughout.
  • Fig. 2 a second embodiment of a bicycle rear hub assembly according to the invention is shown, wherein the same reference numerals are used for the same elements.
  • an axle 2 which, contrary to the material used in the first embodiment, uses fiber composite materials, in particular carbon fiber, aramid fiber or glass fiber materials.
  • metallizations 18 are provided in the area of rolling bearings 8 .
  • the metallizations 18 can be vapor-deposited as coatings, or introduced in the form of inserts in the axis 2, preferably be pressed.
  • the spacer sleeve 16 is missing and the intermediate piece 15 is perforated.
  • the perforations 19 are formed as equidistantly arranged circumferential bores.
  • the holes are circular.
  • the inner hub body 11 has an interruption in a region between the first rolling bearing 13 and the second rolling bearing 14.
  • the inner hub body 11 is thus present only in the immediate surrounding of the rolling elements 13 and 14 area.
  • a pinion pack or individual pinion can be pushed and fastened.
  • force can be transmitted to the rotor 9 and the freewheel device 17 on the hub body 10 and thus not shown spokes on the rim and rolling on a road hose and / or jacket elements.
  • the hub body diameter in the middle area has been reduced to the level of the smaller storage area. This eliminates the previously necessary intermediate piece 15 of the first two embodiments.
  • the outer hub body 12 is now also partially cylindrical in the middle region.
  • a washer 22 provided with an external thread and screwable into the inner hub body 11 constitutes a bearing protection for the outer roller bearing 8.
  • the flange-like concentric extension of the dropout counterpart piece 6 required in the first two embodiments is unnecessary there in the direction of the inner hub body 11 extends.
  • FIG. 4 is a modification of the embodiments of Figures 2 and 3 ,
  • an axis 2 of carbon fiber composite material provided with a metallization and the hub body 11 designed in three parts and on the other hand, as in the third embodiment, the hub body 12 is configured multi-level cylindrical, the disc 22 a bearing protection forms.

Description

Die Erfindung betrifft eine Fahrradhinterradnabenbaugruppe mit einer hohlzylindrischen Achse, mit zwei jeweils auf einen Endabschnitt der Achse aufsteckbaren Ausfallendengegenstücken, mit einem die Achse abschnittsweise umgebenden hohlzylindrisch ausgestalteten Rotor und einem hohlen, die Achse umgebenden Nabenkörper, wobei der Rotor und der Nabenkörper durch an der Achse angeordnete Wälzlager drehbar gelagert sind und wobei die Achse im Bereich der Endabschnitte achsaußenseitig eines Außendurchmessersprungbereichs der Achse einen geringeren Außendurchmesser als in einem mittigen Bereich aufweist.The invention relates to a Fahrradhinterradnabenbaugruppe with a hollow cylindrical axis, with two attachable to each end portion of the axis Ausfallendengegenstücken with an axis partially surrounding hollow cylindrical rotor and a hollow, surrounding the axis of the hub body, wherein the rotor and the hub body arranged on the axis Rolling bearings are rotatably mounted and wherein the axis in the region of the end portions axially outer side of an outer diameter jump region of the axis has a smaller outer diameter than in a central region.

Aus dem Stand der Technik sind Naben, insbesondere solche für Fahrräder bekannt. So offenbart die WO 00/34056 eine Fahrradhinterradnabenbaugruppe mit einer hohlzylindrischen Achse, auf die Adapterringe beidseitig aufgesteckt werden. Diese Adapterringe drücken zwei Innenringe der mit den Adapterringen in Kontakt stehenden Wälzlager auf Wulste der Hohlachse. Es werden mehrere Wälzlager verwendet, die einerseits einen Nabenkörper drehbar zur Achse lagern und andererseits einen Rotor drehbar zur Achse lagern. Zwischen dem Nabenkörper und dem Rotor, welche beide die Achse umgebend angeordnet sind, ist ein Freilaufmechanismus angeordnet. Dieser Freilaufmechanismus ermöglicht das Bewegen des Rotors in eine Rotationsrichtung relativ zum Nabenkörper und verhindert eine entgegengesetzte Drehung relativ zum Nabenkörper des Rotors.Hubs, in particular those for bicycles, are known from the prior art. So revealed the WO 00/34056 a bicycle rear hub assembly with a hollow cylindrical axle, are attached to the adapter rings on both sides. These adapter rings press two inner rings of rolling bearings in contact with the adapter rings on beads of the hollow axle. Several rolling bearings are used which, on the one hand, support a hub body rotatably to the axle and, on the other hand, support a rotor rotatably relative to the axle. Between the hub body and the rotor, which are both arranged surrounding the axis, a freewheel mechanism is arranged. This freewheel mechanism allows the rotor to move in a rotational direction relative to the hub body and prevents opposite rotation relative to the hub body of the rotor.

Am Nabenkörper greifen die Speichen an, die eine kraftübertragende Verbindung zu einer Felge eines Hinterrades darstellen. Auf der Felge wiederum ist es möglich, Schläuche mit Hilfe von Drahtreifen zu befestigen oder sog. Schlauchreifen aufzukleben. Ein solches Hinterrad mit der in der WO 00/34056 offenbarten Fahrradhinterradnabenbaugruppe wird dann mittels eines Schnellspanners in den Ausfallenden eines Fahrradrahmens, und dort insbesondere am Hinterbau, befestigt. Dabei greifen die Adapterringe in schlitzförmige Ausnehmungen der Ausfallenden ein. Der Schnellspanner, der durch die Hohlachse und die beidseitig angeordneten Adapterringe hindurch ragt, wird zur Befestigung der Fahrradhinterradnabenbaugruppe im Betriebszustand des Hinterrades an dem Fahrradrahmen entsprechend befestigt und verriegelt.On the hub body engage the spokes, which represent a force-transmitting connection to a rim of a rear wheel. On the rim, in turn, it is possible to attach hoses with the help of clincher tires or stick so-called tubular tire. Such a rear wheel with in the WO 00/34056 disclosed bicycle rear hub assembly is then attached by means of a quick release in the dropouts of a bicycle frame, and there in particular at the rear end. The adapter rings engage in slot-shaped recesses of the dropouts. The quick release, which projects through the hollow shaft and the adapter rings arranged on both sides, is used for fastening the bicycle rear hub assembly in the operating state the rear wheel attached to the bicycle frame and locked accordingly.

Bei hochwertigen Rennrädern ist es von großer Bedeutung, dass auch die einzelnen Komponenten extrem robust, leichtgängig und gewichtsreduziert ausgestaltet sind. Auf diese Weise lässt sich das Gesamtgewicht des Rennrades vermindern, was besonders im kupierten und bergigen Gelände von großem Vorteil ist. Eine gewünschte Gewichtsreduktion soll jedoch nicht auf Kosten der Steifigkeit und Stabilität gehen, weswegen große Anstrengungen bzgl. Gewichtsreduktion und Steifigkeitserhöhung unternommen werden.For high-quality racing bikes, it is very important that the individual components are designed extremely robust, smooth and weight-reduced. In this way, the total weight of the road bike can be reduced, which is particularly advantageous in hilly and hilly terrain. However, a desired weight reduction should not be at the expense of rigidity and stability, so great efforts are made in terms of weight reduction and stiffness increase.

Gattungsgemässen Stand der Technik ist aus der DE 10 2007 026 821 A1 bekannt.Generic state of the art is from the DE 10 2007 026 821 A1 known.

Es ist die Aufgabe der vorliegenden Erfindung, bestehende Konzeptionen diesbezüglich zu verbessern.It is the object of the present invention to improve existing concepts in this regard.

Diese Aufgabe wird bei einer gattungsgemäßen Fahrradhinterradnabenbaugruppe erfindungsgemäß dadurch gelöst, dass eine senkrecht zur Rotationsachse stehende Querschnittsfläche der Achse entlang der gesamten Rotationsachse um maximal 25% variiert, mit Ausnahme des Außendurchmessersprungbereichs an den die achsaußenseitigen Wälzlager angrenzen. Unter der Querschnittsfläche der Achse wird die Schnittfläche des hohlzylindrischen Mantels der Achse, senkrecht zu der Symmetrieachse der die Wälzlager aufnehmenden Achse verstanden. Auf diese Weise werden zu hohe Spannungen vermieden und es wird ein gleichmäßiger Kraftverlauf innerhalb der Achse gewährleistet. Selbst im Bereich der eingepressten Wälzlager finden keine Spannungssprünge statt. Die Lebensdauer einer solchen Fahrradhinterradnabenbaugruppe wird erhöht. Gleichzeitig wird es möglich, das Gewicht der Fahrradhinterradnabenbaugruppe zu reduzieren, ohne jedoch Einbußen bzgl. der Stabilität, Steifigkeit oder Lebensdauer hinnehmen zu müssen. Ferner wird die Montagefreundlichkeit einer Fahrradhinterradnabenbaugruppe erhöht. So werden für die äußeren Lager Innenringe mit größerem Innendurchmesser verwendet, als für die inneren Wälzlager. Dadurch wird eine unbeabsichtigte Montage von für einen Außenbereich gedachten Wälzlager in einem mittigen Bereich verhindert oder zumindest erschwert ist. Der Monteur erkennt eine Fehlmontage sofort und kann Korrekturmaßnahmen einleiten.This object is achieved according to the invention in a generic Fahrradhinterradnabenbaugruppe that a perpendicular to the axis of rotation cross-sectional surface of the axis along the entire axis of rotation varies by a maximum of 25%, with the exception of the outer diameter jump area adjacent to the axially outer side roller bearings. The cross-sectional area of the axis is understood to be the sectional area of the hollow cylindrical jacket of the axis, perpendicular to the axis of symmetry of the axis receiving the rolling bearing. In this way, too high voltages are avoided and it is ensured a uniform force curve within the axis. Even in the area of the pressed-in roller bearings no voltage jumps take place. The life of such a bicycle rear hub assembly is increased. At the same time, it becomes possible to reduce the weight of the bicycle rear hub assembly, without sacrificing stability, rigidity or durability. Furthermore, the ease of assembly of a bicycle rear hub assembly is increased. For example, inner rings with a larger inner diameter are used for the outer bearings than for the inner roller bearings. As a result, an unintentional mounting of an outside area intended rolling bearing in a central area is prevented or at least made more difficult. The fitter recognizes a faulty installation immediately and can take corrective action.

Aufwändige Reparaturmaßnahmen und Garantieleistungen werden dadurch vermieden.Elaborate repairs and warranty services are thereby avoided.

Vorteilhafte Ausführungsformen werden in den Unteransprüchen beansprucht und nachfolgend näher erläutert.Advantageous embodiments are claimed in the subclaims and explained in more detail below.

Besonders gute Ergebnisse lassen sich erzielen, wenn die Querschnittsfläche um weniger als 15% variiert. Die Steifigkeit der Achse wird erhöht, was zu einer Verschleißreduktion an den einzelnen Segmenten der Achse, wie etwa dem Freilaufmechanismus führt.Particularly good results can be achieved if the cross-sectional area varies by less than 15%. The rigidity of the axle is increased, resulting in a reduction in wear on the individual segments of the axle, such as the freewheel mechanism.

Wenn die Querschnittsfläche konstant bleibt, so ist es möglich, einen besonders großen Durchmesser in einem mittleren Bereich der Achse zu wählen, um die Steifigkeit weiter zu erhöhen, ohne ein Mehrgewicht in Kauf nehmen zu müssen.If the cross-sectional area remains constant, it is possible to choose a particularly large diameter in a central region of the axis, in order to further increase the rigidity, without having to accept an additional weight.

Vorteilhaft ist ferner, wenn die Achse eine konstante Wandstärke aufweist.It is also advantageous if the axis has a constant wall thickness.

Auch ist es von Vorteil, wenn die Achse an beiden Enden Endabschnitte aufweist, deren Außendurchmesser um ein 1,5- bis 2,5-faches der Wandstärke geringer bemessen ist als der Außendurchmesser der Achse in einem mittleren, endabschnittsfernen Bereich. Der Spannungs- und Kräfteverlauf im Inneren der Achse ist auf diese Weise besonders gut.It is also advantageous if the axle has end sections at both ends, the outer diameter of which is dimensioned to be smaller by 1.5 to 2.5 times the wall thickness than the outer diameter of the axle in a middle, end-portion-distant region. The voltage and force curve inside the axle is particularly good in this way.

Dieser Spannungs- und Kräfteverlauf ist dann nahezu optimal, wenn der Außendurchmesser im Bereich der Endabschnitte um das 2-fache der Wandstärke kleiner bemessen ist als der Außendurchmesser der Achse im mittleren Bereich.This stress and force curve is almost optimal when the outer diameter in the region of the end sections is smaller by 2 times the wall thickness than the outer diameter of the axis in the central region.

Selbst wenn in Richtung der Rotationsachse der Achse auf die Endabschnitte Stöße aufgebracht werden, findet kein ungewolltes Einknicken der Achse im Bereich einer Schulter statt, die im Übergangsbereich zwischen dem kleineren Außendurchmesser und dem größeren Außendurchmesser vorhanden ist. Die Stabilität der Achse wird somit erhöht, wobei das Gewicht gleichzeitig minimiert ist.Even if impacts are applied to the end portions in the direction of the axis of rotation of the axis, there is no unwanted buckling of the axis in the region of a shoulder, which is present in the transition region between the smaller outer diameter and the larger outer diameter. The stability of the axle is thus increased, while the weight is minimized at the same time.

Die Fahrradhinterradnabenbaugruppe lässt sich dann besonders gut auf die zu erwartende Belastung abstimmen, wenn der Nabenkörper mehrteilig ausgeführt ist.The bicycle rear hub assembly can then be particularly well matched to the expected load when the hub body is made of several parts.

Wenn der Nabenkörper zumindest in einem zu den Wälzlagern benachbarten Krafteinleitungsbereich mindestens einen Innennabenkörper aufweist, der auf seiner Außenseite von einem separaten Außennabenkörper umgeben ist, so kann bei minimalem Eigengewicht des Nabenkörpers der Kraftverlauf effizient vom Nabenkörper über die Wälzlager zur Achse und von diesem auf den Hinterbau des Fahrradrahmens übertragen werden.If the hub body at least in an adjacent to the rolling bearings force introduction region has at least one inner hub body, which is surrounded on its outer side by a separate outer hub body, then with minimal dead weight of the hub body of the force curve efficiently from the hub body through the bearings to the axis and from this to the rear of the bicycle frame.

Besonders stabil lässt sich eine leichte Fahrradhinterradnabenbaugruppe ausgestalten, wenn sich der Innennabenkörper durchgehend von einem ersten Krafteinleitungsbereich, benachbart zu einem ersten Wälzlager, zu einem zweiten Krafteinleitungsbereich, benachbart zu einem zweiten Wälzlager, erstreckt.A lightweight bicycle rear hub assembly can be configured to be particularly stable when the inner hub body extends continuously from a first force introduction region, adjacent to a first rolling bearing, to a second force introduction region, adjacent to a second rolling bearing.

Da sich Faserverbundwerkstoffe für kraftflussgerechtes Konstruieren besonders eignen, ist es von Vorteil, wenn der Außennabenkörper aus Faserverbund-Werkstoff hergestellt ist, wie Kohlefaser-, Aramidfaser- oder Glasfaserverbundwerkstoff.Since fiber composites are particularly suitable for power flow design, it is advantageous if the outer hub body is made of fiber composite material, such as carbon fiber, aramid fiber or glass fiber composite material.

Das Gewicht des Nabenkörpers lässt sich weiter reduzieren, wenn der Innennabenkörper zweiteilig ausgebildet ist, derart, dass er zwischen dem ersten Krafteinleitungsbereich und dem zweiten Krafteinleitungsbereich unterbrochen ausgestaltet ist.The weight of the hub body can be further reduced if the inner hub body is formed in two parts, such that it is designed to be interrupted between the first force introduction region and the second force introduction region.

Ohne Stabilitätsprobleme in Kauf zu nehmen, hat es sich als vorteilhaft erwiesen, wenn die Achse und/oder der Innennabenkörper aus Leichtmetalllegierungen, wie Aluminiumlegierungen oder Magnesiumlegierungen, aufgebaut ist.Without endangering stability problems, it has proved to be advantageous if the axle and / or the inner hub body are made of light metal alloys, such as aluminum alloys or magnesium alloys.

Eine besonders leichtgewichtige Fahrradhinterradnabenbaugruppe lässt sich dann erreichen, wenn die Achse aus Faserverbundwerkstoff, wie Kohlefaser-, Aramidfaser- oder Glasfaserverbundwerkstoff hergestellt ist. Auf diese Weise lässt sich auch mit bekannten Mitteln relativ einfach die rotationssymmetrische Struktur der Achse spannungsgerecht gestalten. So ist es nicht zwingend notwendig, dass die Achse aus kreiszylindrischen Abschnitten besteht. Auch elliptische Querschnittsflächen, prismatische Grundflächen oder Grundflächen, die sich entlang der Rotationsachse verändern, sind möglich. Die Gestaltungsfreiheit wird erhöht.A particularly lightweight bicycle rear hub assembly can be achieved if the axle is made of fiber composite such as carbon fiber, aramid fiber or fiberglass composite. In this way, the rotationally symmetric structure of the axle can be made voltage-compatible relatively easily with known means. This is not mandatory necessary that the axis consists of circular cylindrical sections. Also elliptical cross-sectional areas, prismatic bases or bases that change along the axis of rotation are possible. The freedom of design is increased.

Um die Abriebfestigkeit zu erhöhen und die Langlebigkeit entsprechender Fahrradhinterradnabenbaugruppen zu verbessern, ist es von Vorteil, wenn die Achse im Bereich der Wälzlager auf ihrer Außenseite metallische Oberflächen aufweist.In order to increase the abrasion resistance and to improve the longevity of corresponding bicycle rear hub assemblies, it is advantageous if the axis in the region of the rolling bearing on its outer side has metallic surfaces.

Die Montagefreundlichkeit wird weiter verbessert, wenn die auf der Achse außen im Bereich der Endabschnitte positionierten Wälzlager durch je eine, durch die Außendurchmesserveränderung gebildete Schulter der Achse, an einer Bewegung aufeinander zu, gehindert sind.The ease of assembly is further improved if the rolling bearings positioned on the outside of the axle in the area of the end sections are prevented from moving towards each other by a respective shoulder of the axle formed by the change in external diameter.

Es ist ferner von Vorteil, wenn der Rotor auf seiner Innenseite eine Schulter aufweist, die einen Außenring eines auf der Achse außen angeordneten Wälzlagers, an dieser anliegend, an einer Bewegung in Richtung der Mitte der Achse hindert. Auf diese Weise wird die statische Bestimmtheit des Gesamtsystems gewährleistet und ein ungewolltes Verschieben des Wälzlagers entlang der Achse unterbunden.It is also advantageous if the rotor has on its inner side a shoulder which prevents an outer ring of a bearing arranged on the outside of the rolling bearing, adjacent thereto, on a movement in the direction of the center of the axis. In this way, the static certainty of the entire system is ensured and prevented unintentional displacement of the rolling bearing along the axis.

Die wird vereinfacht, wenn zwei im mittigen Bereich der Achse angeordnete Wälzlager, mit deren Innenringen schwimmend, auf der Achse gelagert sind.This is simplified if two arranged in the central region of the axis bearings, with their inner rings floating, are mounted on the axle.

Es ist weiter von Vorteil, wenn zwischen dem zweiten Wälzlager, das im größeren Außendurchmesserbereich der Achse angeordnet ist, und im zweiten Krafteinleitungsbereich ein rotationssymmetrisches Zwischenstück angeordnet ist. Die Montage, insbesondere die Vormontage des Nabenkörpers mit dem entsprechenden Wälzlager, wird dadurch erleichtert. Auch lassen sich durch Einbringen von Perforationen in dem Zwischenstück Gewichtseinsparpotenziale heben. Dies wird dann besonders effizient, wenn das Zwischenstück aus einer Leichtmetalllegierung, wie z.B. einer Aluminiumlegierung oder einer Magnesiumlegierung hergestellt ist.It is also advantageous if between the second roller bearing, which is arranged in the larger outer diameter portion of the axis, and in the second force introduction region, a rotationally symmetrical intermediate piece is arranged. The assembly, in particular the pre-assembly of the hub body with the corresponding rolling bearing, is facilitated. Also, by introducing perforations in the intermediate piece weight saving potential can be raised. This becomes particularly efficient when the intermediate piece is made of a light metal alloy, such as aluminum alloy. an aluminum alloy or a magnesium alloy.

Die Erfindung wird mit Hilfe einer Zeichnung näher erläutert.The invention will be explained in more detail with the aid of a drawing.

So zeigen

Fig. 1
eine perspektivische schematische Ansicht einer erfindungsgemäßen Fahrradhinterradnabenbaugruppe,
Fig. 2
eine zweite Ausführungsform einer erfindungsgemäßen Fahrradhinterradnabenbaugruppe,
Fig. 3
eine dritte Ausführungsform einer erfindungsgemäßen Fahrradhinterradnabenbaugruppe mit einem zylindrischen Mittelstück eines zweiteiligen Nabenkörpers und
Fig. 4
eine vierte Ausführungsform einer erfindungsgemäßen Fahrradhinterradnabenbaugruppe mit einem zylindrischen Mittelstück eines dreiteiligen Nabenkörpers.
To show
Fig. 1
a perspective schematic view of a bicycle rear hub assembly according to the invention,
Fig. 2
a second embodiment of a bicycle rear hub assembly according to the invention,
Fig. 3
a third embodiment of a bicycle rear hub assembly according to the invention with a cylindrical center piece of a two-piece hub body and
Fig. 4
a fourth embodiment of a bicycle rear hub assembly according to the invention with a cylindrical center piece of a three-piece hub body.

Die Figuren sind lediglich schematischer Natur und dienen nur dem Verständnis der Erfindung. Für die gleichen Elemente werden dieselben Bezugszeichen verwendet.The figures are merely schematic in nature and are only for the understanding of the invention. The same reference numerals are used for the same elements.

Fig. 1 zeigt eine Fahrradhinterradnabenbaugruppe 1 in schematischer, geschnittener Ansicht. Die Darstellung ist perspektivischer Natur. Fig. 1 shows a bicycle rear hub assembly 1 in a schematic, sectional view. The representation is of a perspective nature.

Im Inneren der Fahrradhinterradnabenbaugruppe 1 ist eine hohlzylindrische Achse 2 angeordnet. Die Achse 2 weist auf ihren beiden distalen Enden Endabschnitte 3 auf, die einen kleineren Außendurchmesser aufweisen als die Achse in einem mittigen Bereich 4. Die Achse 2 weist achsaußenseitig eines Außendurchmessersprungbereiches also einen kleineren Außendurchmesser als achsinnenseitig davon auf. Der Außendurchmessersprungbereich hat nur nur eine in Richtung der Längsachse der Achse 2 gesehene Erstreckung, die der Dicke der Wandstärke der Achse 2 in diesem Bereich entspricht.Inside the bicycle rear hub assembly 1, a hollow cylindrical axle 2 is arranged. The axis 2 has on its two distal ends on end portions 3, which have a smaller outer diameter than the axis in a central region 4. The axis 2 has axially outer side of an outer diameter jump region so a smaller outer diameter than achsinnenseitig thereof. The outer diameter jump range has only one seen in the direction of the longitudinal axis of the axis 2 extension, which corresponds to the thickness of the wall thickness of the axis 2 in this area.

Im Übergangsbereich zwischen dem mittigen Bereich 4 und den Endabschnitten 3 ist jeweils eine Schulter 5 ausgebildet.In the transition region between the central region 4 and the end portions 3, a shoulder 5 is formed in each case.

Auf die beiden Endabschnitte 3 sind hülsenförmige Ausfallendengegenstücke 6 aufgesteckt.On the two end portions 3 sleeve-shaped drop counterpart 6 are attached.

Die Ausfallendengegenstücke 6 weisen einen Innendurchmesser auf, der bei Berücksichtigung einer Spielpassung im Wesentlichen dem Außendurchmesser der Endabschnitte 3 entspricht. Der Innendurchmesser der Ausfallendengegenstücke 6 kann aber auch kleiner sein, um beim Zusammenbau nicht nur eine formschlüssige Verbindung zwischen den Endabschnitten 3 und den Ausfallendengegenstückne 6 zu erreichen, sondern auch eine kraftschlüssige Verbindung.The dropout counterparts 6 have an inside diameter that, when considering a clearance fit, is substantially the outside diameter the end sections 3 corresponds. But the inner diameter of the dropout counterpart 6 can also be smaller to achieve not only a positive connection between the end portions 3 and the Ausfallendengegenstückne 6 during assembly, but also a frictional connection.

Die Fahrradhinterradnabenbaugruppe 1 weist eine Rotationsachse 7 auf, die gleichzeitig die Symmetrie- und Rotationsachse zu der Achse 2, den Ausfallendengegenstücken 6 und den auf der Oberfläche der Achse 2 angebrachten Wälzlagern 8 ist. Die Wälzlager 8 sind als Rillenkugellager ausgebildet.The bicycle rear hub assembly 1 has an axis of rotation 7 which is simultaneously the axis of symmetry and rotation with respect to the axle 2, the dropout counterparts 6 and the roller bearings 8 mounted on the surface of the axle 2. The rolling bearings 8 are designed as deep groove ball bearings.

Konzentrisch zur Rotationsachse 7 und außerhalb der Achse 2, diese umgebend, ist ein Rotor 9 angeordnet. Der Rotor 9 ist auf zwei der im dargestellten Ausführungsbeispiel vier Wälzlager 8 angeordnet. Auch andere Wälzlager, wie Tonnen-, Nadel- und/oder Zylinderwälzlager sind verwendbar.Concentric with the axis of rotation 7 and outside the axis 2, surrounding this, a rotor 9 is arranged. The rotor 9 is arranged on two of the four rolling bearings 8 in the illustrated embodiment. Other rolling bearings, such as barrel, needle and / or roller bearings are usable.

Die zwei weiteren Wälzlager 8 lagern einen Nabenkörper 10 drehbar zur Achse 2. Der Nabenkörper 10 weist dabei einen Innennabenkörper 11 und einen Außennabenkörper 12 auf.The two further rolling bearings 8 support a hub body 10 rotatably relative to the axis 2. The hub body 10 has an inner hub body 11 and an outer hub body 12.

Der Innennabenkörper 11 ist innerhalb des Außennabenkörpers 12 angeordnet und mit geeigneten stoff-, form- oder kraftschlüssigen Mitteln im Außennabenkörper 12 verbunden. Der Innennabenkörper 11 bietet einem aussenliegenden ersten Wälzlager 13 einen Aufnahmesitz.The inner hub body 11 is arranged within the outer hub body 12 and connected with suitable material, positive or non-positive means in the outer hub body 12. The inner hub body 11 provides an outer first rolling bearing 13 a receiving seat.

Zwischen einem zweiten Wälzlager 14 und dem Innennabenkörper 11 ist ein Zwischenstück 15 angeordnet. Im in Fig. 1 dargestellten Ausführungsbeispiel erstreckt sich der Innennabenkörper 11 zumindest zwischen dem ersten wälzlagernahen Bereich und dem zweiten wälzlagernahen Bereich entlang des Außennabenkörpers 12.Between a second roller bearing 14 and the inner hub body 11, an intermediate piece 15 is arranged. Im in Fig. 1 1, the inner hub body 11 extends at least between the first rolling bearing near area and the second rolling bearing near area along the outer hub body 12.

Die als Hohlachse ausgebildete Achse 2 ist im dargestellten Ausführungsbeispiel aus Leichtmetall ausgebildet und weist im Bereich der Endabschnitte 3 Ausfallendengegenstücke 6 auf, wobei die Querschnittsfläche der Achse 2 entlang der Rotationsachse 7 konstant bleibt. Der mittlere Bereich 4 der Achse hat dadurch einen größeren Durchmesser zur Steifigkeitserhöhung.The trained as a hollow shaft axis 2 is formed in the illustrated embodiment of light metal and has in the region of the end portions 3 dropout counterparts 6, wherein the cross-sectional area of the axis 2 along the rotation axis 7 remains constant. The central region 4 of the axis thus has a larger diameter for increasing the rigidity.

Es ist auch möglich, dass die Wandstärke der Achse 2 konstant bleibt. Die Biegesteifigkeit bleibt dadurch hoch.It is also possible that the wall thickness of the axis 2 remains constant. The flexural rigidity remains high.

Im dargestellten Ausführungsbeispiel ist der Rotor 9 aus Leichtmetall gefertigt, wie auch der Innennabenkörper 11 und die Ausfallendengegenstücke 6, wobei der Außennabenkörper 12 hingegen aus Faserverbundwerkstoff, insbesondere kunststoffhaltigem Material, hergestellt ist.In the illustrated embodiment, the rotor 9 is made of light metal, as well as the inner hub body 11 and the Ausfallendengegenstücke 6, wherein the outer hub body 12, however, is made of fiber composite material, in particular plastic-containing material.

Die Ausfallendengegenstücke 6 weisen konzentrische Erweiterungen auf, die auf der einen Seite der Achse 2, groben Schmutz abweisend an der Innenseite des Innennabenkörpers 11 anliegen und auf der anderen Seite der Achse 2 an der Innenseite des Rotors 9, ebenfalls groben Schmutz abweisend, anliegen. Es ist jedoch hier ein Anliegen zu verstehen, dass die Relativrotationen der Elemente zueinander nicht hemmt. Ein kleiner Spalt zwischen den Elementen ist daher akzeptabel.The dropout counterparts 6 have concentric extensions which abut on the one side of the axis 2, coarse dirt repellent on the inside of the inner hub body 11 and on the other side of the axis 2 on the inside of the rotor 9, also coarse dirt repellent. However, it is a concern here to understand that the relative rotation of the elements does not inhibit each other. A small gap between the elements is therefore acceptable.

Die Ergänzung oder Abwandlung als Schleifdichtung ist denkbar. Zusätzlich oder alternativ ist es möglich, auch einen Sprengring achsendseitig der Außenlaufringe der aussenliegenden Wälzlager 8 am Rotor 9 anzuordnen, um ein Verrutschen der Wälzlager 8 zu verhindern. Eine solche Positionierhilfe ist auch zwischen den inneren beiden Wälzlagern 8 angeordnet, nämlich in Form eines Distanzringes 16. Dieser Distanzring 16 ist wiederum hülsenförmig ausgebildet und ist mit einem Spiel von 2/10 mm auf dem Außenumfang der Achse 2, zwischen dem zweiten Wälzlager 14 und dem nächstgelegenen, den Rotor 9 kontaktierenden Wälzlager 8 angeordnet. Die beiden Wälzlager 8, die den Rotor 9 stützen, sind somit in O-Anordnung angebracht, genauso wie die beiden Wälzlager 13 und 14, die den Nabenkörper 10 stützen. Es ist aber auch eine X-Anordnung möglich.The addition or modification as a sliding seal is conceivable. Additionally or alternatively, it is also possible to arrange a snap ring on the axial end side of the outer races of the outer rolling bearings 8 on the rotor 9 in order to prevent the rolling bearings 8 from slipping. Such a positioning aid is also arranged between the inner two rolling bearings 8, namely in the form of a spacer ring 16. This spacer ring 16 is again formed sleeve-shaped and is with a clearance of 2/10 mm on the outer circumference of the axis 2, between the second roller bearing 14 and the nearest, the rotor 9 contacting roller bearing 8 is arranged. The two rolling bearings 8 which support the rotor 9 are thus mounted in an O arrangement, as are the two rolling bearings 13 and 14 which support the hub body 10. But it is also an X-arrangement possible.

Im Bereich zwischen dem Nabenkörper 10 und dem Rotor 9 ist eine Freilaufvorrichtung 17 angeordnet. Diese wird auch als Freilaufmechanismus bezeichnet.In the area between the hub body 10 and the rotor 9, a freewheel device 17 is arranged. This is also referred to as a freewheel mechanism.

Wie der Figur 1 gut zu entnehmen ist, weist die Achse 2 durchgehend dieselbe Wandstärke d auf.Again FIG. 1 can be seen well, the axis 2 has the same wall thickness d throughout.

In Fig. 2 ist ein zweites Ausführungsbeispiel einer erfindungsgemäßen Fahrradhinterradnabenbaugruppe dargestellt, wobei für die gleichen Elemente dieselben Bezugszeichen verwendet werden.In Fig. 2 a second embodiment of a bicycle rear hub assembly according to the invention is shown, wherein the same reference numerals are used for the same elements.

Im Unterschied zu der Ausführungsform von Fig. 1, wird jedoch eine Achse 2 verwendet, die entgegen des verwendeten Materials des ersten Ausführungsbeispieles Faserverbundwerkstoffe verwendet, insbesondere Kohlefaser-, Aramidfaser- oder Glasfaserwerkstoffe. Im Bereich der Wälzlager 8 sind Metallisierungen 18 vorgesehen. Die Metallisierungen 18 können als Beschichtungen aufgedampft werden, oder in Form von Inserts in die Achse 2 eingebracht werden, vorzugsweise eingepresst werden.Unlike the embodiment of Fig. 1 however, an axle 2 is used which, contrary to the material used in the first embodiment, uses fiber composite materials, in particular carbon fiber, aramid fiber or glass fiber materials. In the area of rolling bearings 8 metallizations 18 are provided. The metallizations 18 can be vapor-deposited as coatings, or introduced in the form of inserts in the axis 2, preferably be pressed.

Als weiterer Unterschied fehlt die Distanzhülse 16 und ist das Zwischenstück 15 perforiert ausgestaltet. Die Perforationen 19 sind als äquidistant zueinander angeordnete umlaufende Bohrungen ausgebildet. Die Bohrungen sind kreisrund ausgebildet.As a further difference, the spacer sleeve 16 is missing and the intermediate piece 15 is perforated. The perforations 19 are formed as equidistantly arranged circumferential bores. The holes are circular.

Um die Gewichtsreduktion des zweiten Ausführungsbeispieles noch zu verbessern, weist der Innennabenkörper 11 in einem Bereich zwischen dem ersten Wälzlager 13 und dem zweiten Wälzlager 14 eine Unterbrechung auf. Der Innennabenkörper 11 ist somit lediglich im unmittelbaren die Wälzkörper 13 und 14 umgebenden Bereich vorhanden.In order to further improve the weight reduction of the second embodiment, the inner hub body 11 has an interruption in a region between the first rolling bearing 13 and the second rolling bearing 14. The inner hub body 11 is thus present only in the immediate surrounding of the rolling elements 13 and 14 area.

Wie auch im ersten Ausführungsbeispiel, ist auf dem Rotor 9, der eine Vielzahl von Vorsprüngen aufweist, ein Ritzelpaket oder einzelne Ritzel aufschiebbar und befestigbar. Durch Auflegen einer Kette auf die Ritzel, lässt sich Kraft in den Rotor 9 und über die Freilaufvorrichtung 17 auf den Nabenkörper 10 und somit über nicht dargestellte Speichen auf die Felge und auf einer Straße abrollende Schlauch- und/oder Mantelelemente übertragen.As in the first embodiment, on the rotor 9, which has a plurality of projections, a pinion pack or individual pinion can be pushed and fastened. By placing a chain on the pinion, force can be transmitted to the rotor 9 and the freewheel device 17 on the hub body 10 and thus not shown spokes on the rim and rolling on a road hose and / or jacket elements.

In den Ausführungsbeispielen der Figuren 3 und 4 ist der Nabenkörperdurchmesser im mittleren Bereich auf das Niveau des kleineren Lagerbereichs vermindert worden. Dadurch entfällt das bisher nötige Zwischenstück 15 der ersten beiden Ausführungsbeispiele. Der Außennabenkörper 12 ist nun auch im mittleren Bereich abschnittweise zylindrisch ausgebildet.In the embodiments of the Figures 3 and 4 the hub body diameter in the middle area has been reduced to the level of the smaller storage area. This eliminates the previously necessary intermediate piece 15 of the first two embodiments. The outer hub body 12 is now also partially cylindrical in the middle region.

Es ist ferner eine umlaufende Nut 20 auf dem nabenkörperseitigen Endabschnitt eingebracht. In dieser Nut ist ein O-Ring 21 aus elastischem Material, wie Gummi eingelegt. Dieser O-Ring 21 stellt eine Lagesicherung zwischen der Achse 2 und dem Ausfallendengegenstück 6 sicher. Es sind auch zur Nut 20 gegengleiche Rillen auf der Innenseite des Ausfallendengegenstücks 6 eingearbeitet. Beim Abziehen des in der Zeichnung rechten Ausfallendengegenstücks 6 verbleibt der O-Ring 21 auf der Achse 2. Dies erleichtert die Montage. Die Durchmesser des O-Rings 21, der Nut 20 und der Rille sind entsprechend gewählt und berücksichtigen eventuell notwendige Abweichungen.It is also a circumferential groove 20 introduced on the hub body side end portion. In this groove, an O-ring 21 made of elastic material, such as rubber is inserted. This O-ring 21 ensures a secure position between the axle 2 and the dropout counterpart 6. There are also groove 20 counterparts grooves on the inside of the counterpart counterpart 6 incorporated. When pulling the right in the drawing right dropout counterpart 6 of the O-ring 21 remains on the axis 2. This facilitates the assembly. The diameter of the O-ring 21, the groove 20 and the groove are chosen accordingly and take into account any necessary deviations.

Am nabenkörperseitigen Ende der Achse 2 stellt eine mit einem Außengewinde versehene und in den Innennabenkörper 11 einschraubbare Scheibe 22 eine Lagersicherung für das äußere Wälzlager 8 dar. Auf diese Weise erübrigt sich die in den ersten beiden Ausführungsbeispielen benötige flanschartige konzentrische Erweiterung des Ausfallendengegenstücks 6, das sich dort in Richtung des Innennabenkörpers 11 erstreckt.At the hub-body-side end of the axle 2, a washer 22 provided with an external thread and screwable into the inner hub body 11 constitutes a bearing protection for the outer roller bearing 8. In this way, the flange-like concentric extension of the dropout counterpart piece 6 required in the first two embodiments is unnecessary there in the direction of the inner hub body 11 extends.

Das Ausführungsbeispiel gem. Figur 4 ist eine Abwandelung der Ausführungsbeispiele der Figuren 2 und 3. So ist bei diesem vierten Ausführungsbeispiel einerseits, wie beim zweiten Ausführungsbeispiel, eine Achse 2 aus Kohlefaserverbundwerkstoff mit einer Metallisierung versehen und der Nabenkörper 11 dreiteilig ausgestaltet, und andererseits, wie beim dritten Ausführungsbeispiel, der Nabenkörper 12 mehrstufig zylindrisch ausgestaltet, wobei die Scheibe 22 eine Lagersicherung bildet.The embodiment acc. FIG. 4 is a modification of the embodiments of Figures 2 and 3 , Thus, in this fourth embodiment, on the one hand, as in the second embodiment, an axis 2 of carbon fiber composite material provided with a metallization and the hub body 11 designed in three parts, and on the other hand, as in the third embodiment, the hub body 12 is configured multi-level cylindrical, the disc 22 a bearing protection forms.

In allen Varianten ist es möglich, eine Freilaufvorrichtung 17 mit einer Zahnscheibe zu verwenden, die in ihren formschlussermöglichenden Elementen Perforationen aufweist.In all variants, it is possible to use a freewheel device 17 with a toothed disc, which has perforations in their formschlussermöglichenden elements.

Claims (10)

  1. A bicycle rear hub component (1) comprising a hollow-cylindrical axle (2) and two dropout counter pieces (6) adapted to be attached to a respective end portion (3) of the axle (2), a hollow-cylindrical rotor (9) surrounding the axle (2) along a certain section thereof, and a hollow hub shell (10) surrounding the axle (2), said rotor (9) and said hub shell (10) being rotatably supported by means of ball bearings (8) arranged on the axle (2), characterized in that, in the area of the end portions (3), the axle (2) has, on the outer side of an outer diameter change region of the axle (2), an outer diameter which is smaller than the diameter in a middle region (4) thereof, and that a cross-sectional area of the axle (2) extending perpendicular to a rotational axis (7) varies by a maximum of 25% along the whole rotational axis (7), with the exception of the outer diameter change region onto which the ball bearings (8) on the outer side of the axle border.
  2. The bicycle rear hub component (1), according to claim 1, characterized in that the cross-sectional area varies by less than 15%.
  3. The bicycle rear hub component (1) according to claim 2, characterized in that the cross-sectional area does not vary.
  4. The bicycle rear hub component (1) according to one of the claims 1 to 3, characterized in that the hub shell (10) is configured as a multipart component.
  5. The bicycle rear hub component (1) according to claim 4, characterized in that, at least in a force application area located adjacent the ball bearings (8), the hub shell (10) includes at least one inner hub shell (11) surrounded by a separate outer hub shell (12) on the outer side thereof.
  6. The bicycle rear hub component (1) according to claim 5, characterized in that the inner hub shell (11) extends continuously from a first force application area, adjacent a first ball bearing (13), to a second force application area, adjacent a second ball bearing (14).
  7. The bicycle rear hub component (1) according to claim 6, characterized in that the outer hub shell (12) is made of a fiber composite material, such as a carbon fiber, an aramid fiber or a glass fiber composite material.
  8. The bicycle rear hub component (1) according to claim 6 or 7, characterized in that the inner hub shell (11) is a two-part component of such a nature that it is interrupted between the first force application area and the second force application area.
  9. The bicycle rear hub component (1) according to one of the claims 1 to 8, characterized in that the axle (2) and/or the inner hub shell (11) are formed of light metal alloys, such as aluminum alloys or magnesium alloys, or that the axle (2) is formed of a fiber composite material, such as a carbon fiber, an aramid fiber or a glass fiber composite material, and/or that the axle (2) has metallic surfaces on the outer side thereof in the area of the ball bearings (8).
  10. The bicycle rear hub component (1) according to one of the claims 1 to 9, characterized in that the ball bearings (8) positioned on the outer side of the axle (2) in the area of the end portions (3) are prevented from moving towards each other by a respective shoulder (5) of the axle (2) defined by the change in outer diameter, and/or that the rotor (9) has on the inner side thereof a shoulder which abuts on an outer ring of a ball bearing (8) arranged on the outer side of the axle (2) and prevents said outer ring from moving towards the middle of the axle (2), and that preferably two ball bearings (8), which are arranged in the middle area (4) of the axle (2), have their inner rings float-mounted on the axle (2), and that, in addition, a rotation-symmetric intermediate piece (15) is disposed preferably between the second ball bearing (14), which is arranged in the region of the axle (2) having the larger outer diameter, and the second force application area of the inner hub shell (11).
EP10001867A 2009-02-24 2010-02-24 Bicycle rear wheel hub component Active EP2221193B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009010259A DE102009010259B4 (en) 2009-02-24 2009-02-24 Hub for a rear wheel of a bicycle and bicycle wheel with such a hub

Publications (2)

Publication Number Publication Date
EP2221193A1 EP2221193A1 (en) 2010-08-25
EP2221193B1 true EP2221193B1 (en) 2013-04-03

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EP10001867A Active EP2221193B1 (en) 2009-02-24 2010-02-24 Bicycle rear wheel hub component

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EP (1) EP2221193B1 (en)
DE (1) DE102009010259B4 (en)
ES (1) ES2419157T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103802596B (en) * 2012-11-07 2016-03-09 昆山亨利金属科技有限公司 The rim structure that aluminium is combined with carbon fiber material

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6116114A (en) 1993-08-23 2000-09-12 Edwards; Craig H. Rotatable spindle assembly utilizing two-piece spindle
US5647643A (en) * 1995-03-01 1997-07-15 Noble; Ryun Bates Wheel hub
EP1149000A1 (en) 1998-12-08 2001-10-31 DT Swiss AG Hub, notably for bicycles and such like
FR2855099B1 (en) * 2003-05-23 2006-07-07 Mavic Sa CENTRIAL HUB OF A BICYCLE WHEEL AND WHEEL EQUIPPED WITH SUCH HUB
US7562755B2 (en) * 2006-07-07 2009-07-21 Dt Swiss, Inc. Rear wheel hub, in particular for bicycles
US7617920B2 (en) * 2006-07-21 2009-11-17 Shimano Inc. Bicycle freewheel
DE102007026821B4 (en) * 2007-06-06 2020-09-17 Dt Swiss Ag Hub, especially for bicycles and the like
US8197371B2 (en) 2008-01-24 2012-06-12 Specialized Bicycle Components, Inc. Cogset assembly for a bicycle
DE202009008246U1 (en) * 2009-06-16 2009-10-01 Forstmann, Jochen Optimized structure of an axle assembly for a bicycle rear hub

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ES2419157T3 (en) 2013-08-19
DE102009010259A1 (en) 2011-05-19
DE102009010259B4 (en) 2012-07-19
EP2221193A1 (en) 2010-08-25

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